I don't normally do commissions any more but I would make an exception for these girls!
I would expect you would want them nothing less than perfect so I would expect to spend considerable time on them. As a rule of thumb I usually charge the cost of the figure for the painting service (including assembly and standard size basing) - so you'd be looking at least $25 each. I would expect we'd start with one figure first and if you are happy with the result move onto the rest. Advanced basing can be negotiated.
In terms of timing unfortunately I do have a day job so would be looking around 4-5 days each figure.
For some tabletop samples of my painting check this thread - viewtopic.php?f=10&t=14068
- unfortunately I don't have pictures of my old commission work which is a higher standard again. But you can ask other members for their thoughts on my painting; without being to big-headed I do have quite a lot of painting awards and was a state finalist for Golden Demon a few years back. I also have produced comics, and artwork for TV.
If that's not all too steep then drop me a line!