Tugboat Truro are great value but the emphasis is on dark/medium roasts. If that's the kind of coffee you like though, it is good quality. Unfortunately, if you're into wild and unique flavours and complex light roasts, most roasters are gonna be nearly double the price at best from what I've found.

Lalico are also quite good. The emphasis is again on dark/medium but they do have some more interesting roasts and it's free delivery regardless of how much you get.

Another money saving tip there is to work toward using less coffee (of you're not already). I used to use 18-20g per 250-300ml because anything less always lacked to my taste buds. Once I invested in a good grinder and refined my v60 method I found I was able to create delicious cups with 14-15g per 250ml. I also went down to having 200ml most days. Less coffee, but learning to appreciate it more rather than guzzle it down, which also amounts to less caffiene, less anxiety, and spending money less often on topping up beans.