Not a single 5 gallon standard tank around
I've been to 3 Petcos, and 1 Petsmart and there is not a single 5g tank to be found. The one petco that I always saw a stock of them at, has close permanently to my surprise when I pulled up the location on google maps.
The only 5-10g tanks were the All-in-one deals that were 4x the price. Sometimes it's like the world is just tellin you to spend a lil extra.
So in a heated moment I pulled up google search, scrolled through the results on the first page, clicked a link, and ordered a 7.5g Penn Plax radius.
All I really wanted was a tank that was less than 17" that could sit on the bottom shelf of my Spec V DIY stand. A standard 5g would have been perfect even at the full $15 price. I've seen em on DPG sale only about once a year and can't wait that long.
Don't ask for advice. Ask for information, gather lots of information from different reliable sources. Then use the information to make your own advice.