Here are a few Suggestions i was thinking of.
1. Add Blaze eggs to shop.
2. Add blaze Rods to shop. (32 For 4-8$)
3. Make Block Versions of sell signs. (Ironblock, Goldblock, Diamondblock. etc)
4. Make Squid Spawners useful by adding ink sacks to shop. (32 for 2-8$)
5. Add Skele eggs to shop.
6. Add Bones to shop. (32 for 2-8$)
7. add Ender Pearls to shop. (16 for 2-4$)
That's all i got for now hopefully some of these will be accepted
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p.s.
I'm not saying remove it but whats the point of bat eggs? they don't rlly drop anything.