how does this sound?

[northwest lawn]

356 yards of sod installed $3.50 a yard
8.14 yards of mulch $55.00 a yard installed
Topsoil 30 yards installed $49.00 per yard
pea gravel $58.00 for two tons
plus edging for walkway and two tons of pea gravel dont know how many hours to instal walk way it is 3' wide x 60' long will bid at $35.00 per man hour


total of bid without labor for walk is $3411.00

sound right? to high to low? proly think with edging and labor to instal walk way think the bid will be around $4,000.00
will also have to put in tree rings, and verticle mulch to help with the raised grade will be billed at $35 per man hour