Hi, I need to give a bid by friday on a wall that is 4.5 ft high and 55 feet long.. It is currently a wall with rotted out landscaping timbers and it needs to be replaced.. the wall is straights. i would be using the rockwood classic 6" blocks. they are 18" wide, and 6" high. 56 lbs each. and are $5.88 each block... I need to know how many man hours this might take to construct with backfilling and tearing the old wall out and everything.. I came up with a total of $3980.00 for the job.. Does that sound ok?? $2000.00 for the blocks, 200 for the gravel, 100 for rental equipment like saw and compactor, and about 1600.00 labor.. please let me know what you think..