Every Roseanne's Research card we price, most valuable first. Prices are what copies actually sold for, updated daily.
What a Roseanne's Research card is worth
The most valuable Roseanne's Research on this list is Roseanne's Research from Secret Wonders at $16.75£12.61€14.75, and the 14 priced copies across 4 sets are worth $57£43€50 together. Most of that sits in a handful of printings: the older the set and the scarcer the print run, the wider the gap to the rest.
Roseanne's Research is printed in Japanese as well: 3 cards across 3 sets, the most valuable of them Roseanne's Research from Shining Darkness at $2.93£2.21€2.58. Switch the list above to Japanese to read those, or to Both to rank the two catalogues against each other.
reverse holo printings are priced separately from the standard card, because they do not trade at the same money.
If you are trying to identify which Roseanne's Research you have, the set name is printed on the card and the collector number sits in the bottom corner. Open the card here and the page carries every printing of it, the graded prices, and whether grading the copy is worth the fee. Sets to start with: Secret Wonders, POP Series 8, League & Championship Cards.