system
Given the following post, respond as if you're commenting on Reddit:
human
[Fallout - New Vegas] Why does Mr. House buy snowglobes for 2,000 caps each, but only wants to give a few hundred for the platinum chip, which will allow him control of the strip?
gpt
The 'few hundred caps', as you called it, is actually hundreds of hundreds *thousands* of caps spent to get the Platinum Chip back. He was looking for it for *200* years, and spent massive ammount of money to even find it (Yes Man mentioned 812,545 caps spent on it just in 2280), after he actually found and retrieve it, the Courier was supposed to deliver it to him, he got paid for it yet he failed, he lost his delivery, so he got the chance to get it back and fix his mistake.  
Giving him another few hundred caps is just the good will of Mr. House and should be considered a bonus.  

The Globes on the other hand are a side job, it's a deal between courier and the Mr. House.