I'm not so good with the art pricing, but I'd gladly pay 350k for both examples. Maybe more, depending on how much time you invest in each picture.

That's a very unique style you have, by the way. ^_^ What program do you use?

Photoshop CS2? Wow, that’s awesome. =)

It may very well be worth more. But, like I said, I’m not so good with pricing. Although, considering you spend 2-5 hours on one picture, I would definitely ask for more.

Have you ever considered holding an auction? That might give you better idea of what people are willing to pay for your work.