Advice on 1st buggy - Found some rollers but unsure about $ etc

[Gee]

Yeah pretty lucky with the dogs. They chase it but don't bite it. Amber has tried the sneak attack by jumping out of the brush at them. She has misjudge it a couple time and has ended up in a barrel roll after hitting them. She doesn't do it as often anymore. The track is out behind the house. I've been working on it here and there for the last couple of years. Just expanded to the section at the far right with the wood ramps. Thanks for the comments Jeff.