I'm a product testing junkie from pricey stuff to cheap and everything in between and after 22 years of detailing, first as an actual job and now just for fun on my own cars and family and friends when I have free time, I can honestly say I've tried nearly everything out there worth trying and am still trying new things just for fun. I have my list of specific products I like best for certain categories, not all are the cheapest but nearly all of them aren't the most pricey either. What type of products are you looking for? I can recommend some good stuff that isn't overly pricey but it's not all over the counter Walmart or parts store gold like Seal N Shine, most will need to be ordered online.
Here are some I consider good bang for the buck...
For wheels, tires and wheel well cleaning I like P&S Brake Buster which is only $20 for a gallon. It does all 3 jobs extremely well and saves having to buy two or three different products for those 3 jobs since it does it all well.
For glass cleaner my go to is Meguiar's D120 which is from their pro line and is a concentrate you then dilute with water. It's around $20 a gallon but that gallon when diluted with water makes you 11 gallons of glass cleaner, you won't need to buy glass cleaner for a VERY long time. It works great since it's alcohol based, it's tint safe since there's no ammonia and it smells a bit like grape so when using it inside a car you're not being bombarded by the alcohol smell like other glass cleaners.
You can typically get those on sale when Autogeek or other online retailers have 15, 20 or even 25% off sales making them even better value bulk purchases that will last you a while. Autogeek is currently having a 25% off sale BTW.
If you want something even more durable than Seal N Shine an awesome paste wax/sealant for about $20 a tin is Soft 99 Fusso Coat (check out waxmode's youtube video on it's hydrophobic properties, among other youtube videos). There's a dark and a light version depending on your paint...
https://jdmchemicals.com/collections/car-wax Although with how well Seal N Shine has been performing for me and others doing testing, and how easy it is to re-apply real quick after a wash, is extra durability really needed beyond it? Been asking myself that question. I still love Fusso though excellent product. I have other waxes that cost $100 a tin, so this to me is a major deal IMO at $20. Make sure you put it on thin and do it on cool dry panels in the shade and it goes on and off easily. If you put it on too thick or try and use it in the sun or heat it will fight you a bit coming off, but that can be said for several products when used improperly. I've just seen a few people complain about removal and in every case I'd bet it was user error of piling it on.