I'm not sure what the situation is like wherever you live, but these past recent years there's been a lot of progress made when it comes to vegan cheeses and egg substitutes. The cheese I'm getting is also quite affordable at Lidl (1,20€ maybe for 150g), eggs can be substituted with tofu or egg mix you just mix with water and spices, though I don't remember how much those cost.

Also strange, I would have expected chickpeas to cost next to nothing anywhere, really. A 265g can (400g including water) costs like 70 cents maybe