The trouble is that the cheapest is not always the best.

Has the tree got a TPO, all tree men would check up at the council,
but it takes time.
How tall, how old, how hazardous ie rotten limbs, greenhouses,
overhanging neighbours gardens and fences, near a road, near power
cables, near telephone cables etc etc.
How accessible to get a chipper in, or drag everything out to the
road.
Even leaving the tree, as I have a log burner, costs money. As
somebody somewhere has got to crosscut it up, and stack it.



Getting 3 quotes is always useful because the different salespeople
approach things in different ways and between them highlight all sorts
of problems that you wouldn't have thought about had you spoken to just
one.