20-year old cheap bow - rehair or replace?

[Beer of the Bass]

I'm a fairly casual player these days, absolutely no classical aspirations, I either dip into the local free improv scene or play in folky acoustic or singer/songwriter type situations. I do bow a certain amount though, either for more melodic parts, textural stuff in improv or to work on my intonation when practicing. 

I play German bow and have had the same no-name wooden student bow for about 20 years now, a fairly generic Chinese one. I've had it rehaired in that time, but it's quite a bit overdue for another. Though I did some DIY repairs to it during lockdown in 2020 (when everything was shut) just to keep practicing- the tip facing has been reattached with CA glue and the wedge at the tip is a homemade replacement I whittled from a piece of maple scrap. I don't if those plus the low value of the bow might make it marginal for another rehair. 

I could look at a new bow, but in my budget it would be a <£200 student bow. There are probably more options today than when I got this one, but that's still not getting me into nice bow territory by a long way. I'd probably be looking at things like the Vingobow from China, importer brands like Gewa, possibly the P&H carbon bow, or I think Bassbags have Romanian made student bows. 

I know there's a rehairer just a couple of miles away from me, I could possibly drop in with my bow and see if they think it's viable for a rehair. But I'd be curious to hear the opinions of the Basschat massiv.