On the subject about commissions.
As an artist when a client asks me to do a commission the price depends what they commission. If they want me to do a commission such as what you had done. The price would have been cheaper than my usual work, because I wouldn't be using my creativity just my skills as a painter/sculpter or photographer. Artists use a 3 tiered commission pricing system, the more creative control the higher the price. So be careful in the future who you pick for commissions.
Personally I wouldn't have reproduced the item. Professionally I don't think many artists would. You paid for a job, and it was done, finished. For something that they haven't used their creativity for and they have reproduced it in another form is an embarrassment to their reputation as an artist. But then they could only be a painter, there's a difference between painters and artists. I would only keep the copyright for a commissioned item being reproduced if it was in the highest of the "tiered system" because I have had to work from scratch to produce it, otherwise its done, its yours, I'm moving on.