How much can this barbie go up in price?

I got lucky and was able to purchase 5 Now and Then Barbies for the 50th anniversary. I am going to sell 4 of them and keep one as a collector’s item.

How much can these dolls go up in price since they are a limited edition, and they were 3 dollars when sold last week.

I always find joy when toy scalpers get stuck with their goods

Barbie 2009 Holiday Doll 50th Anniversary Edition Mattel N6556 $119.99

RARE MATTEL SPECIAL EDITION 50th ANNIVERSARY NASCAR BARBIE MINT IN BOX!! $9.99

1999 Walt Disney Cinderella 50th Anniversary Limited Edition Barbie New NRFB $25.99

BARBIE 50TH ANNIVERSARY LIMITED EDITION MINT NRFB $35.00

50th Anniversary Nascar Barbie ..New In Box..Collector Edition!! $5.00

1998 50th Anniversary Nascar Collector Edition Barbie NRFB $14.99

Barbie and Rockers- 50th Anniversary Edition- 1986- NRFB $19.99

New Holiday Barbie Christmas 2009 Doll Mattel 50th Anniversary Collector Edition $54.95

1998 NASCAR Barbie ~ 50th Anniversary ~ Collector Edition ~ NRFB $8.99

BARBIE “50Th ANNIVERSARY NASCAR” COLLECTOR EDITION NRFB $9.99

1998 50th Anniversary NASCAR Collector Edition Barbie NRFB $19.95

12 inch Nascar Barbie 50th Anniversary Collector’s Edition $24.90

1998 barbie 50th anniversary nascar doll new in package collector edition $9.99

50th Anniversary Nascar Barbie collector edition $10.00

BARBIE DOLL MATTEL 50TH ANNIVERSARY NASCAR COLLECTORS EDITION 20442 1998NIB $9.95

NRFB Disney Barbie 50th Anniversary Then & Now Limited Edition $27.99

1998 Barbie 50 th Anniversary Nascar Collector Edition $19.95

NRFB! Mint! 50th Anniversary Nascar Barbie Doll! 1998 Collector’s Edition! $14.95

1998 Barbie Collectors Edition 50th Anniversary Nascar Barbie $12.99

1998 Barbie Collector Edition 50th Anniversary 1948-1998 NASCAR 11 1/2″ NRFB $16.00

50TH ANNIVERSARY NASCAR (1948-1998) COLLECTOR EDITION BARBIE DOLL – NEW IN BOX $12.00

MATTEL 28553 I LOVE LUCY 50TH ANNIVERSARY EDITION ( LUCY AND RICKY RICARDO) $39.99

Barbie 50th Anniversary NASCAR Collector Edition Doll (1998), New Toys And Games $7.98

BARBIE ~TOY’S ‘R’ US GOLDEN ANNIVERSARY~ VERY LIMITED 50th EDITION -1998- $60.00

BARBIE 1959-2009 THEN AND NOW 50th Anniversary Swim BATHING SUIT Edition $9.99

Barbie Ice Capades 50th Anniversary edition model #7365 1989 Mattel $17.00

NEW Collector Edition NASCAR 50th Anniversary 1998 Barbie Doll $9.99

Barbie Wizard of OZ Dorothy 50th Anniversary Musical NRFB NEW 2009 Edition $70.00

2 “Nascar” Barbie Dolls, Official #94 & 50th Anniversary, Collector Edition,MINT $25.00

Barbie Racing Nascar Doll 1998 50th Anniversary Collector’s Edition Mattel $2.99

1998 Nascar 50th Anniversary Barbie Collectors Edition #20442 $9.99

NASCAR 50th Anniversary Race Driver Barbie Doll 1998; RARE Collector Edition! $9.95

50th Anniversary 1948-1998 Nascar Barbie Collector Edition-NIB $10.95

NEW Barbie Collector 50th Anniversary Edition 1961 Reproduction My Favourite Ken $49.99

50th ANNIVERSARY COLLECTOR EDITION NASCAR BARBIE DOLL—–MUST SEE $60.00

Heidi Klum 2009 Barbie Doll Pink Label Collection 50th Anniversary Edition $39.99

Barbie NASCAR 50th Anniversary Collector Edition 1948 – 1998 Collectibles 1998 M $79.99

Bathing Suit Barbie 50th Anniversary Edition (2008) NEW $22.00

50TH ANNIVERSARY NASCAR BARBIE DOLL, SPEC EDIT 1998 $14.99

My Favorite Barbie Malibu Barbie 1971 50th Edition WOW Great doll and Outfit!! $31.23

Barbie Nascar 50th Anniversary #20442 Collector Edition $10.95

NASCAR 50th ANNIVERSARY BARBIE DOLL Collector Edition $49.95

1998 50th Anniversary NASCAR Barbie Collector Edition #20442 New Unopened Box $20.00

Barbie Nascar 50th Anniversary Edition $10.99

RARE 2008 50TH ANNIVERSARY GLAMOUR BARBIE COLLECTOR EDITION HOLIDAY GOWN NEW $189.04

Barbie NASCAR 50th Anniversary Collector Edition $10.00

1998 50TH ANNIVERSARY COLLECTORS EDITION NASCAR BARBIE $24.99

50th Anniversary Nascar Barbie 20442 Limited Edition $19.99

Barbie Doll 1998 Collector Edition 50th Anniversary NASCAR New with Box $8.99

1997 Barbie Doll Special Edition Toys R Us Kid 50th Anniversary 18895 NEW IN BOX $25.95