I've made a bounty. But I feel like the question that I've offered the bounty to doesn't have a big enough bounty.
I mean honestly, who would write a basic walkthrough for 50 reputation?
EDIT: Removed my answer. But the thing is who would write a walkthrough (from scratch) for a measley 50 reputation? Could I add more reputation on offer to actually attract more attention?
No, there is not a way to add more rep to an existing bounty.
However, I think somewhere along the line you've got a little confused about how bounties work, and what they are for. I say this because you've put a bounty on a post you've already answered at length (a 500 word post!), having deleted your long answer.
While this is not necessarily a bad thing to do in some circumstances (your own answer is outdated and you would like a new answer), I think what you're trying to do is reward someone for extending your answer. That can't work because:
a. You can't award your own bounty to your own post
b. Bounty rep goes to the owner of the post, and not to any editors
While the bounty might encourage another answer to the post, if it was a continuation of your post it would be likely to be merged into it anyway.
It's also worth noting that bounties do not 'buy' answers, they give your post exposure. That is why bounties are never refunded, even if you don't get a satisfactory answer. For your 50 rep, you've bought 50 repsworth of exposure, boosting the posts visibility. Giving a bounty of 500 rep gives you even more visibility, but still no guarantee of an answer.
