I may be doing a small retaining wall. 1' high and about 25' long. Most of the wall will be striaght except one 90 degree angle. I'm having trouble pricing this job out. I will have around $170 tied up in material but dont know how long the job will take. Any suggestions would be great, this will be my first wall BTW. Usually I pass on jobs like this but this is a smaller scale wall and feel it would be a good job to get my feet wet.