I have taken the advice of Calista and gotten a small worm farm. Now I buy 100 less worms every 3.5 days lol.
But seriously, I look forward to owning more farms. I buy my worm packs from the vendor right on my land. I didn't realize I use so many worms. The only bad part is that now I would probably need at least 28 small worms farms and still have to buy more worms from others. But the excitement of my first harvest I still remember...it was a day I had ran out of worms. So I do intend to work my way up to tasty worms and enchanted worms as well but for now am content to buy them from others.
One day I will have another small worm farm. Until that time, I am content to purchase worms from other farmers.