I've left a few out that either aren't applicable or I don't really have a meaningful answer for. Also, this is in Australian dollars.
a pair of jeans -
a new coat -
sneakers - $80 - 100? They'd have to be really swell though. I don't really wear shoes that often.
shoes - The only shoes I'd buy are sneakers, so see above.
t shirt - $40, maybe $50 if it was a really nice one online where I have to factor in shipping.
sporty shirt - Wouldn't wear one, so $0.
suit - Never bought one, but maybe $200? I don't know. What's a suit worth?
vehicle -
house -
vacation -
computer - $1500. I spent $1200 on my last computer build from scratch, next one will be around the $900 mark. I'd actually spend anything on a computer if I needed it, but I'm always reasonable with my computer builds, and I only build with parts, so I don't think I could justify a computer over $1500 to myself.
phone -
These are maximums, but I like value for money. I don't like to spend excessively just because I have the money.
Hey tick, TV/home theater might be another common item to add. Just a thought.
@obscure, that was beautiful. And not too far off base.