Thought I would strip it down and check it out. It was unreal. Clogged with crap in every place imaginable... I bought it sight unseen so to be expected I guess. I have given it a thorough clean and it's now just normally filthy

It will need stripping again for another going over before I actually shoot it. Anyway I got it for £100 in a sealed bid and they seem to be for sale for closer to £300 elsewhere so I cant argue too much. But god some people just dont clean them I guess.... ever!
Would it be worth getting it professionally cleaned/serviced? What sort of cost am I looking at for that? Being a cheap gun it's not worth spending a lot on but i do like my guns clean so might be worth it.