I think you need to expand more on what a big ride is in terms of time and distance. Some on here thing a big ride is 30k but many would consider that a short blast for the evening (as it also varies massively with terrain).
Anyway for most riding the most cost effective drink is water and I find that works well. For general riding I don’t think you need special products but each to their own. Energy drinks give you energy but only if you are running low on sugar, they don’t give you fitness.
I use energy drinks on long fast rides and races. On long rides (50miles, 5h+) I need all the energy I can get so find the carbohydrate drinks help. If it is a slow club ride then I don’t bother as I have ample time to get food out of my bag at the top of hills, waiting at gates and when someone punctures.
For racing, especially on the road I use them because it is an easy way to get food without thinking. Last week I raced and we covered 70 miles at 23mph average – there weren’t many points when it was comfortable to eat – you were either hooning downhill or about to vomit up a hill.
Cheap alternatives
Energy
Juice watered down 50:50 and a pinch of salt if you like. I normally have a glass of watered down juice when I come in from a ride as a quick pick me up before getting some proper food. Juice is around 10% sugar off the top of my head so needs to be watered down.
Buy in bulk (Torq etc. sell big tubs which work out cheaper)
Recovery
Semi skimmed milk
Chocolate flavoured milk
Yazoo (no need to refrigerate so can leave in car)
Alpro chocolate rice milk. (no need to refrigerate so can leave in car)
All roughly the same carb/protein balance as recovery product and work just as well from the info I’ve seen. Google chocolate milk as a recovery drink.
A sugary hit can be good when you come in to perk you up. So the juice option above or leave a can of cola in the fridge. I’ve found this to be beneficial but not the recovery drinks (although they have the same “pick me up effect”).