Hmm, $9.99 hasn't been around since who knows when here. I'm not sure if they are dine in price or only take out now in your area, but there are a few things you need to look at now:
1) Food prices went up like crazy, especially meat, due to outbreak at meat packing plants.
2) Extra work to get the logistic across, people need to keep distance and slow down the work, that increase cost.
3) Dollar devaluation due to all the money printing we have now in the Fed. This means they are now cheap when you sell food oversea.
4) Restaurants cost increase or they will shut, and they do shut down, so the survivors decided to stay open and charge more, because they still can't cover the cost.
5) You are no longer buying drinks dining in, so they figure you have to pay more because they can't afford to lose money on the $9.99 steak if you don't buy a $3 drink and leave a $2 tip.