As noted in the other post, each eBay account must have its own individual email address. To sign up for a second account, just sign out of your current one. Then click on "Sign in", then "Switch account." The next window has a link for "Create an account."
eBay uses the term "Basic" as the name for the second-lowest option in store subscriptions. The lowest level is called "Starter." You won't be surprised to hear that "Basic" used to be the lowest level, and "Starter" was introduced later.
Sellers with a Starter store get 250 free basic insertions per month, which is the same as sellers with no store.
When you sign up for a Store subscription, you can choose month-to-month, or make an annual commitment to get a discounted rate. The $4.95 price that you quoted is for the annual rate for a Starter store. If you sign up at the $4.95 rate, you have made a full year commitment and there will be a cancellation penalty fee if you cancel the subscription before the final month. Plus, you'll still get only 250 free insertions per month.
If you want to have more than 250 free insertions, forget about the Store subscription idea; just sign up for another eBay user ID. Each of your IDs will get 250 free insertions per month.
Also be sure to check you listing limits. Each user ID has limits on the number of items and total value that they can list, and these are not affected by signing up for a store subscription. Sometimes the limit for a new account is very low, though that might get raised if you link it to your established account.
https://www.ebay.com/help/selling/listings/selling-limits?id=4107
