Lee molds get a bad rap, but I've been using some for over 25 years (my first Lee mold was a 44 cal. 240 SWC and I cast good shootable bullets to this day with this mold. You can get a Lee 2 cavity mold for around $50.00... https://www.titanreloading.com/lee-molds/bullet-molds
I quit buying any dies or molds from ebay. Last time I looked I saw a mold I might try and I asked the vendor about the weight of the bullet. He knew nothing about bullet molds and couldn't even show a pic of the cavity. Years ago I bought a mold from ebay and it was used, as described, but used by a gorilla. Dings and scratches, sloppy fitting halves, etc. I once bought an RCBS die set from ebay and it took me 10-12 hours to repair all the threads and replace set screws (they looked like King Kong was the previous owner). Some things I want to have it in my hand, or be brand new before I buy it.
Whenever I post the cost of a reloading/casting tool. I will give a high rounded off estimate (mainly to stop the "I can get a better price at XXX sporting goods"). Actual prices are $26.98+ shipping. Arsenal website shows $65.00 for 44 cal. molds. And yes, Amazon has 44 cal Lee molds for $25.98. The OP asked for inexpensive mold, able to cast good bullets, not a Lee badmouthing session...
In this case if one has 3 different molds from different companies that all produce a similar designed bullet and they all produce usable bullets of the same quality then how can one say that one is better than the other?
I'm one that believe a tool will last to the degree that it is used and treated. An abused tool will not last no matter who made it. I don't understand how anyone can compare an aluminum mold to a brass mold or a steel mold. Lets just compare aluminum to aluminum and brass to brass, steel to steel.