Greetings
That's a tricky question because I was fortunate enough to purchase many of my SE razors not so many years back when very few people had any interest in them; vintage Gillette DE's were what most shavers were after. I own at least a dozen first class SE's that I paid around a fiver each for, in the case of some that is including postage! I think my couple of GEM OCMM's represent the very best value as I think they are the ultimate shaving safety razor and they are still cheap and plentiful to this day.
I have payed what I consider a lot of money for a couple of Heljestrand wedge blade safety razors and a Henckles safety razor in an Allegro stropping set but I still consider them superb value because of their condition, the engineering in them, their history and the wonderful shave they deliver and they were no more expensive than some of the high end modern stainless DE razors.
Astral Cream face/body moisturiser, the soft version in the tube which costs 2 quid. I find it absolutely wonderful, better than anything else I have tried at any price, including some of my daughters eye wateringly priced moisturising creams, that I used to 'steal' when she lived at home!
Tabac shaving stick, a massive stick (100grs) in a dispenser for under six quid, together with Speick one, of if not the, finest shaving soap.
Quite often there is no correlation between price and performance but of course if you do not like or cannot get on with a particular product for whatever reason it is of no use to you even if it costs only tuppence!
Regards
Dick.