I'm not going to recommend them to highly but at the cheapest end of the brand name PU market are the Chinese mobs called Yibuy and Belcat. Both seem to be what they say they are and offer a reasonable known starting reference for a reasonable (cheap) price particularly when you find yourself starting out on the PU upgrade path. I have used a few in various builds and they offer quite good and expectable tone for the price especially when you want to try some more specific magnet or wiring configuration without the expense if something goes horribly wrong...

There are also the PU's sets from the people at Fender and Epiphone that are are a similar price and sometimes can be slightly cheaper than the likes of Tonerider. A quick search on Ebay will find you a set of Epiphone Probuckers with wiring loom and pots at or about AU$150. For a few dollars less you can get a set of Fender Strat Tex-Mex PU's for AU$127 or a Tex-Mex loaded and wired guard for AU$160, or you could go the Fender Squire Classic vibe custom '60's Tele PU set plus decent pots and wiring for AU$85... All great tonal options considering their lineage...