The complication in this matter is that I am a UK citizen living in the UK, but as stated the organisation is US based. In the UK we have a Small Claims Court which is easily accessed, and ideal for a situation alike this. Does the US have such a facility which can be accessed by non-US citizens?
If not, does anybody know what options are available?
There is no federal small claims court in the US, which is a big pain for copyright issues.
If the image is gone (and isn't being used elsewhere to sell the product), and the lawyer route seems too expensive to follow through on, you could do worse than to simply send them an invoice. They may not want to pay their lawyers, either.
(If your image
is still being used, then you may be able to leverage the DMCA, particularly if your image appears in product advertising elsewhere. I had a band end up wwith one of my images on their album cover, and the album was being sold by Amazon. I was able to get amazon to take down the cover of the album from their web site with a letter, and that, after three weeks of "playing nice" to get ahold of the record company and band, got me a phone call in two hours and payment an hour after that)
Warning: I am not a lawyer.
Joe