You will get interest in the fakies - there is always someone happy to give them a home
As for the blind bags in general the below usually works.
Waves 4 and higher are pretty much all retail value. Occasionally the Princesses from Wave 5 and the Wonderbolts from Wave 7 will sell a little higher - maybe more like $5 each but not much more. These waves were very widely available.
Wave 3 will be about a $1-2 more than retail mainly because even though they were reasonably prevalent they were long enough ago newer collectors may be on the look out.
Wave 1 which actually had quite a poor release $6-7 each.
Wave 2 blind bags - if they are any of the characters who since had a US release $3-5. If they are ones which did not have a US release, depending on which pony, they will sit $12-20 [some can go higher]
Any figures which were in larger combined packs, as long as they were never released singly - $5-8 each depending on character.