Hi again, MJ.
Here is the info, with photos I hope! We'll see.
Collector Mouse EV-1998 - already on eBay:
https://www.ebay.com/itm/LOT-of-4-Wee-Forest-Folk-MS16-Camping-Out-PM2-Waterbugs-EV1998-WFF-1-box/323474540144 You could bid though! It's a nice lot and there are not many bidders so far.
Moon Mouse M-078 - None listed on eBay or Amazon. Also checked already closed auctions and/or Buy it now on eBay - no listings. Don't see M078 Moon Mouse on a search of the Internet, other than here. Might've missed it.
*** Perhaps a better question is, what do you believe is a fair price? I don't know if people just hang on to these or if it's rare - because I can't find it anywhere, so far.
Merry Chris-Mouse M-091 - Boy mouse in red PJs with striped package on ceramic "hooked rug" base
Mom wrote in pen on the bottom "Vail '86" which is where she received it for Christmas! One of the few she wrote on. It's not obtrusive, but it's there. Might be neat to know where it was purchased! Up to you.
Merry Chris-Miss M-090 - Girl mouse in white sleeper, holding red stocking next to gray toy mouse on wheels, ceramic "hooked rug" base
Sunday Drivers M-132 - Boy mouse in gray sleeves, girl mouse in white with yellow purse riding in red convertible, tan (earlier) or black fenders. Mom's has TAN fenders, so it's an earlier one.
Polly's Parasol M-170 - Girl mouse holding parasol and white basket, wearing pink dress and white cap with pink bow. On pink roses/green leaves base.
I'm NOT an expert, but they all seem in mint condition, with the exception of the writing on the bottom of M-091