(just so you know, the products I list are all Walmart prices. Idk if there's a Walmart near you, but it should be similar for similar stores)
Suave Naturals (any scent, although the coconut has protein, in case you're protein sensitive) is a good cowash and I also use it as a leave in (and frequently, it's the only thing I use after my shower) at $1.50 for a huge family size bottle.
Tresemme Naturals (I use the Radiant Volume one, I find it's more moisturizing than the Nourishing Moisture, but either one is good, I've used both) is a good rinse out conditioner at $4.48 for another huge bottle
As well as being protein sensitive, I'm also glycerin sensitive (finding products for me is impossible, haha!), so I've really had limitations on what products I can use. I really like Herbal Essences Body Envy mousse. It gives me hold with very little crunch. I think it runs about $2.97 (I got it on sale for $2.50) or $3.37, I can't remember.
For gel, I really like Aussie Instant Freeze. I think that's another $2.97, but I'm not positive. Somewhere in the $3 range. If you're not glycerin sensitive, a lot of people like the L.A. Looks Sport Gel (I've used it and I like it, just not as much as Aussie IF) and you get A TON for SUPER CHEAP! 20oz for $1.98.
I'm good with the drugstore stuff, but once you get to the more expensive stuff (like Deva and Ouidad), I'm so lost. Haha!!
I hope this helped a little!