Some like the Kask Protones. I like the Lazer G1 MIPS, and have two of them. But, your definition of "low profile" may be different than mine or anyone else's. I will also only buy MIPS helmets, but that is me, so that rules out Kask.

The Lazer G1 MIPS can be found for around $150. I'm not sure you will find any of the helmets that most consider "low profile" for $100 or less unless you find a closeout type sale.

I would not buy a helmet without trying it on for fit and comfort. I have yet to find a Specialized helmet that fits my egg well, even though I love their shoes.