Here are the top 40 sports card memorabilia eBay auctions, both current and completed (below), as of 5/29.

Top 40 current eBay baseball sports card memorabilia auctions

1) 2010 Bowman Chrome Superfractor Stephen Strasburg 1/1 - $16,304 (85 bids)
2) 1954 Topps #128 Hank Henry Aaron Rookie Card Psa 8 - $3,595 (15 bids)
3) 1999 Ud Babe Ruth/hank Aaron/mays Piece Of History Bat - $3,450 (13 bids)
4) 1933 Goudey #181 Babe Ruth Ex Psa 5 Beauty - $3,049 (36 bids)
5) Stephen Strasburg 2010 Bowman Orange Refractor Auto /25 - $2,828 (16 bids)
6) 1959 Topps #514 Bob Gibson Rookie Psa Mint 9 - $2,800 (18 bids)
7) T206 Ty Cobb, Bat Off Shoulder, Ex, Psa 5 - $2,695 (1 bid)
8) 2010 Bowman Chrome Stephen Strasburg Red Refractor #2/5 - $2,181 (37 bids)
9) Authentic Autograph Babe Ruth Card - $2,175 (10 bids)
10) 01 Bowman Chrome Albert Pujols Auto Refractor /500 Psa - $2,025 (11 bids)
11) 1933 Goudey #53 Babe Ruth Rc Sgc 60 Psa 5 - $2,000 (1 bid)
12) Babe Ruth Tools Of The Trade Jumbo Jersey Plus More - $1,925 (9 bids)
13) 99 Epic Signature Gold Auto /23 Michael Jordan Bgs 9.5 - $1,648 (12 bids)
14) 2010 Bowman Baseball Jumbo Hta (8) Box Case Sealed - $1,400 (4 bids)
15) Babe Ruth Jsa Auto 5 Mickey Mantle Maris Gehrig & 1/1 - $1,365 (30 bids)
16) 1957 Topps Complete Baseball Set (1-407) Exmt/nrmt++ - $1,325 (10 bids)
17) 1951 Bowman #253 Mickey Mantle Rookie Yankees Sgc 60 Ex - $1,301 (14 bids)
18) Jason Heyward 2008 Bowman Chrome Orange 14/25 - $1,275 (13 bids)
19) 2009 Topps Sterling Mickey Mantle Cut Auto 1/1 Yankees - $1,250 (22 bids)
20) 2008 Bowman Chrome Jason Heyward Auto /50 1 Day Only - $1,176 (15 bids)
21) 1933 Goudey Babe Ruth 144 Batting Psa 2 Nice Image - $1,161 (35 bids)
22) 1951 Bowman Mickey Mantle Rc High #253 Sgc 70 Ex+ Hof - $1,136 (12 bids)
23) T206 Ty Cobb Detroit Hof Red Portrait Psa 4.5 Vgex Plus - $1,125 (24 bids)
24) Ichiro Suzuki Autograph Jersey Card - $1,000 (9 bids)
25) Very High Grade 1975 Topps Mini Wax Box With Mint Packs - $999 (1 bid)
26) 1971 Topps Complete Baseball Card Set Nm - (very Nice) - $900 (1 bid)
27) Sports Card Collection Gu Patch Jersey Auto Vintage Lot - $860 (15 bids)
28) 2008 Ud Presidential Cut John Quincy Adams Auto - $860 (15 bids)
29) 1972 Topps Baseball Compete Set 1-787 Many Psa Sgc - $842 (29 bids)
30) Babe Ruth 1932 U.s. Caramel ** Psa 2 ** Yankee Legend - $811 (25 bids)
31) T206 Ty Cobb - Green Portrait - Psa 3 Hof - $810 (12 bids)
32) 2010 Topps Allen & Ginter Baseball 12 Box Hobby Case - $800 (1 bid)
33) T206 Bill O' Hara (st Louis) Polar Bear Psa 3 Rare - $800 (20 bids)
34) 1939 Play Ball R334 Baseball Card Near Set 159/161 - $800 (1 bid)
35) 1952 Bowman #101 Mickey Mantle Psa-5 (sharp) - $795 (1 bid)
36) 17 Mickey Mantle Cards 1957-1969 Ex/nm Very Sweet - $788 (8 bids)
37) 1961 Topps Mint Set Bust 300 Mickey Mantle Yankees - $781 (23 bids)
38) 1951 Bowman Willie Mays Card #305 Psa Ex 5 Hof - $736 (6 bids)
39) 2008 Bowman Chrome Jesus Montero Orange Ref/auto 11/25 - $708 (9 bids)
40) 2001 Topps Reserve Albert Pujols Rc Auto - Super Rare - $705 (10 bids)

Top 20 most watched eBay baseball sports card memorabilia auctions

1) 2010 Bowman Chrome Superfractor Stephen Strasburg 1/1 - $16,304 (9815 watchers)
2) 2010 Bowman Chrome Stephen Strasburg Red Refractor #2/5 - $2,181 (409 watchers)
3) Babe Ruth Jsa Auto 5 Mickey Mantle Maris Gehrig & 1/1 - $1,365 (95 watchers)
4) Stephen Strasburg 2010 Bowman Orange Refractor Auto /25 - $2,828 (87 watchers)
5) 1933 Goudey Babe Ruth 144 Batting Psa 2 Nice Image - $1,161 (80 watchers)
6) 1933 Goudey #181 Babe Ruth Ex Psa 5 Beauty - $3,049 (75 watchers)
7) 08 Sweet Spot Stephen Strasburg Usa Ball Auto /37 Bgs 9 - $392 (57 watchers)
8) 99 Epic Signature Gold Auto /23 Michael Jordan Bgs 9.5 - $1,648 (57 watchers)
9) 1954 Topps #128 Hank Henry Aaron Rookie Card Psa 8 - $3,595 (57 watchers)
10) 2009 Ken Griffey Jr Ultimate Triple Logo Patch Auto /24 - $315 (56 watchers)
11) Ultimate Derek Jeter Albert Pujols Griffey Jr Auto /50 - $330 (55 watchers)
12) '10 Bowman Stephen Strasburg Blue Parallel Rc Auto /250 - $431 (51 watchers)
13) 2009 Topps Sterling Mickey Mantle Cut Auto 1/1 Yankees - $1,250 (48 watchers)
14) 1973 Topps Baseball Unopened Rack Pack Clemente Ryan - $257 (48 watchers)
15) 2007 Ud Premier Babe Ruth/dimaggio/gehrig Triple Jersey - $214 (48 watchers)
16) 2008 Ud Presidential Cut John Quincy Adams Auto - $860 (48 watchers)
17) 1951 Bowman #253 Mickey Mantle Rookie Yankees Sgc 60 Ex - $1,301 (48 watchers)
18) 2009 Bowman Chrome Mike Trout Gold Ref Auto Rc 33/50 - $137 (47 watchers)
19) 1959 Topps #514 Bob Gibson Rookie Psa Mint 9 - $2,800 (47 watchers)
20) 2009 Ultimate Cal Ripken Jersey Number "8" Patch Unique - $138 (46 watchers)

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Top 20 completed eBay baseball sports card memorabilia auctions ending 5/29:

1) 1993 Topps Finest Refractor Complete Set Psa 9 And 10 - $9,600 - (#280508544425)
2) 1954 Topps #1 Ted Williams Psa 8.5 L@@ks Mint 9 Regrade - $7,950 - (#280507215947)
3) 1952 Topps #307 Frank Campos Black Star Variation Psa 5 - $4,617 - (#380234018181)
4) 1909-1911 T206 Ray Demmitt (st. Louis) Psa 4 Vg-ex - $4,100 - (#300428808238)
5) 1/1 Starlin Castro 2010 Bowman Chrome Superfractor Auto - $3,999 - (#140409786824)
6) 1960 Topps Baseball Complete 572 Card Set ... Near Mint - $3,750 - (#130392519253)
7) 1967 Topps #423 Fence Busters Willie Mays Psa 10 - $3,318 - (#280508171126)
8) 1909-1911 T206 Ray Demmitt (st. Louis) Psa 3 Vg - $3,250 - (#300428808677)
9) 2010 Bowman Stephen Strasburg Orange Auto #ed 25/25 - $3,101 - (#380233950332)
10) 2010 Stephen Strasburg Bowman Orange Rookie Auto /25 - $3,000 - (#190397550078)
11) Huge Baseball Card Lot 1968,69,70 Topps (8,000) Cards - $2,611 - (#250634947818)
12) 1957 Topps Baseball Complete Set 407/407 Nice Set - $2,605 - (#370383746463)
13) 1957 Topps #377 Andre Rodgers Psa 9 Giants 1/2 No 10 - $2,552 - (#390197494280)
14) 1967 Topps #600 Brooks Robinson Psa 10 Set Break - $2,550 - (#290436205019)
15) 1964 Topps Baseball Complete Set Nm Loaded - $2,550 - (#330434751558)
16) 1948-leaf-joe Dimaggio #1 Psa 7 Nm - $2,481 - (#270580673645)
17) 1958 Topps Baseball Complete Set Ex-ex-mt Nice L@@k - $2,336 - (#370383744223)
18) 1951 Bowman #253 Mickey Mantle True Rookie 1st Card ~ex - $2,200 - (#130392141088)
19) 2010 Bowman Stephen Strasburg Orange Auto Rookie #/25 - $2,146 - (#180508437679)
20) 1957 Topps #2 Yogi Berra Yankees Psa 9 Mint Smr $2650 - $2,132 - (#120569958421)

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Upcoming Baseball  Sports Card Memorabilia Events:

1) Ohio Cup Vintage Base Ball Festival (Sep 4-5; Columbus, OH)
2) 3D Pop Art By Charles Fazzino at the Mets Hall of  (Apr 12-May 31; New York, NY)
3) Sports Card & Collectibles Auction (Jun 2; Bound Brook, NJ)
4) Philly Wyndham Garden Hotel Sports Card & Collecti (Jun 5; Essington, PA)
5) Sports Card & Collectibles Show (Jun 13; Bordentown, NJ)

All 30 Baseball events