Would Marble be an appropriate choice for a bar top that will have a small stainless steel undermount bar sink?

I have been quoted the same price for marble or granite. Are these counter tops usually the same price?

Hi Heidi,
Though I don't know a great deal about such, I do know they are both generally pricey. Marble though, assuming it is a solid slab, I would generally consider to likely be the more expensive of the two materials. Though this might depend somewhat on the type of marble, or even granite. Hopefully someone will know better than me.
The one caution with marble is that it is generally relatively susceptible to water staining. One thus has to be careful to clean up any spills within a reasonable period to avoid such.
Sorry I can't be of more help. Take care.