Update: So the crossbow and some extra bolts arrived last week. Midway shipped really quickly. It is simple to put together, with pins that holds the bow and stock in place, so you can disassemble it and fit it into a backpack in 30 seconds. I installed a budget red dot sight I had around.
Overall, I like it. It a fun and accurate crossbow. The cocking mechanism makes it simple and quick to load up the next shot. Even with the cocking lever, you need reasonable strength to draw the bow, a child or some ladies my have difficulty. It's well made, considering it is a budget tool. The adjustable M4 type stock is tight, probably because the buffer tube has a coat of paint, so I might sand it off some to free it up.
It's clearly not suitable for deer sized game, but I understood that when I got it. It is quiet and accurate at 20 yards, and I'm sure you can shoot a bit further but that's the range I was shooting at. I had to shoot at each dot on the target separately, because I already peeled off one vane from the bolt (arrow) as it was shooting a pretty tight group when I was aiming at the same spot.
So my experience is that for the price, it is a fun thing. It's fair to call it a small game bow, not a toy, since it would probably put an arrow 10" into your chest. I'm familiar with full power hunting crossbows, and used to shoot a 65# compound bow, and this does not have near that level of power, but it's pretty good for what it is. Judging by the depth the bolts went in to the target, I would say it is similar in power to a 40 or 45 pound recurve bow that I've used before.