What is the cheapest razor you know with a decent aluminum handle? I do not care at all about the head, all I want is aluminum handles. So far I have been buying Saiver razors just to get their handles.
For modern that I would opine is about as cheap as you will get for aluminum razors. For vintage look for no name 3pc piece razors that look different from a standard brass type 3pc. They are usually pretty easy to spot by the finish when they are aluminum. Collectors tend to turn their nose up to those so they do come cheap in a lot of cases.
1960-70s british gillette techs..most are aluminum handled,french 60s ones if you like the earlier ball end type handle..
Razorock Lupo is a nice looking razor with all aluminum head and handle and if using US dollars it becomes very inexpensive IMO.
Ditto on the Gillette Tech. Aluminum handled ones are distinctive, due to the tartan-like knurl on the handles.
Lord Safety razors on Amazon long light Aluminium handle bought one on ebay tears ago - L6 -- on amazon us for 6.70 Usd ex shipping and similar on UK amazon 4.99. Euro 5.99 on Amazon.de handle is light but usable.
I guess it depends on the length. Gillette aluminum handle techs or Lord long handle razor. The Lord is cheap on Amazon.