Here is a modern battery operated 'power toothbrush'. It's produced by/for Walgreens, so you know that Walgreens is the only store you can buy it out of. The package has plenty of Sonic touches, including thumbs up Sonic X type, the newer ring of stars/jumping design, & some blue checkers. The text just says about how it's "easy hold" & helps get rid of plaque. The tootbrush is nicely themed as well, with 2 Sonic graphics, blue button, and Red/white/blue bristles. There were 2 other designs. Send 'em in for credit if you've seen others similar to this! 

This battery operated toothbrush was probably released later than the one to the left. It has somewhat newer stock art on it, though it shares the exact same head / bristle design as the previous one. Notice how the bristles are colored. This one isn't "Walgreens" branded, but says "Care" (something) at the top. It comes with a replacement brush head for free & says "Sonic Power Toothbrush". What's that colored wedge sticker at the bottom there? Where could you buy this toothbrush?