It is P-248b ("Series E" May 18 1982) with 5,000,000 print run so I can imagine this note being at least 10X what Numista has on its very inaccurate pricing tables. Only 2% of Numista users reported this note so it is much tougher than the 3 later varieties.
Also consider that Numista moderators have lumped together P-248a & b, P-254, P-258 & P-261a & b (4 different notes) as one entity. This causes a lot of confusion amongst collectors who may have entered incorrect info on P-248b (likely they had a later/cheaper version of this note & fed that incorrect info into the Numista's algorithm).
I usually ignore the pricing tables since Numista has members who may enter that they have paid Face Value (or less) for the note too. A more helpful feature is to check out what the same note may list for on eBay (but these prices may be inflated too).
BTW: I think you would draw more attention to your “Question” if you identified the note you need info on in your thread title (or used a title such as, “Value of Costa Rica 100 Colones?”).
