Original 151 from base, fossil & jungle set

Hey guys, I started a small nostalgic collection of the original 151 pokemon. I know about sv 151 but the original cards are more sentimental to me.

Don't really care about editions, completing sets trainer cards and so on.

I used gemini to create a list from the first 3 sets.

What would be the best way to buy these in bulk? Bought like 8 cards at an average of £3 each which seems a bit much at the moment.