Hi there,
Now is definitely the time to buy online if you haven't. Trust me, once you buy online, you won't be buying from your petstore anymore.
You can buy 1000 crickets for probably the price you pay for 100 at your local store.
Any insect you buy at your petstore, and more, you can get online
Some good ones would be mealworms and supers, since you can buy a bulk amount and keep them alive forever.
You can also buy bulk crickets but they are harder to keep alive.
You can buy dubia roaches, silkworms, butterworms, hornworms, and BSFL.
Choices are endless
Personally, I just bought 1000 superworms and 500 mealworms. Those will last for months for me.
I also have a dubia colony, and about 500 BSFL left. All of the sites I buy from state they will not be affected by this, and will continue to operate. Although a few have told me they will no longer be letting you hold your package at the post office - for social distancing practices. Packages must be shipped to your home.
-Brandon