How much is this？
How much will that be？
How much are these altogether？
I think this is too expensive.
That's little too much for me. Could you make it less for me？
I can't afford it. This is too much.
This is not a reasonable price.
I don't have this much cash on me. Will you make it little cheap？
What's the regular price？ Do I get discount on this？
Tell me what's the best price you can do for me？
If I pay you cash， will you give me some discount？
I'd buy this if you can make it a little less expensive.
I'd buy it if you reduce the price a little.
May I have a discount on this？
Will you give me a discount？
Can I have a discount？
Would you give me a discount if I buy three of these？
I've come all the way from China； please give me a better price.