My chiller went down a couple of weeks ago overnight with a 45kg fallow buck in it, I took it in to my local butcher (skinned) the following morning and he charged me £30 to butcher and bag it into various cuts including mincing both shoulders and the trimmings which I thought was really good. I gave him £50 as he got me out of a pickle and also kept it in his freezer for a week and said he'd be interested in buying some carcasses in the future. My local game dealer wanted £2 kg to butcher and as an aside, my local abattoir charges around £25-35 to butcher a pig or lamb obviously rising if you want sausages/burgers etc. If you are in a position to be able to do it yourself, I find it a really rewarding process and isn't as much hassle as you might think.