Dude, what are you talking about.
It's not a SMALL sprocket up front that causes problems, it's a small sprocket when MATCHED to a large rear sprocket when you have problems.
Normal gearing is 44/16 which works out to 2.75 to 1. That means every time you pedal once, the rear wheel spins 2.75 times.
The DK Signal for example (I believe) is 28/12 gearing which works out to 2.33 to 1. That means the rear wheel only spins 2.33 times every time you pedal once. Or about .42 LESS spins per crank. That's about one foot less every time you pedal. Or about 15% easier to pedal. You do go slower, but it isn't crazy gearing. Crazy gearing is anything at 2.0 to 1 or lower. Like 24/12 or 32/16 is crazy easy to pedal.
I run 30/12 and have no problems riding wherever I want to go. Mostly though I just ride flatland at my local lot.
I do NOT recommend eBay for flatland bikes, though sometimes you will see a really good deal on it.
A really good bike on eBay right now:
But, it's expensive. So what is your budget?