If it's done right sounds about right, most importantly you already have a good relationship and you like his work, just that is already priceless.

Good luck

Make sure you check code regulations for your county before you begin. Retaining walls over 4' in height require permits and engineered (or engineer approved) drawings. btw, retaining wall height is not just the exposed surface height of the wall but is measured from the depth of the footings. So what appears to be a 4' tall retaining wall is for permitting/code purpose actually around 5.5' tall

Not sure if you mean he is buying a "bulldozer" for $7500. But usually costs to cart away spoils or bring in fill is weighted heavily in comparison to a total cost.

100lf, with proper drainage, reinforcing, all materials and labor, and in California, seems more than reasonable, almost too cheap.

Thanks everyone. He did say he is giving me a good price. He's done extensive yard work including tree plantings, installing 2000 sq feet artifical grass, etc.

@GN Builders L.L.C I agree! They are polite and do great work.

@gardengal48 (PNW Z8/9) He mentioned possibly needing a structural engineer. We'll check regulations.

@3onthetree The excavation and hauling of dirt is 5800. This is not in California.

That is a very good price. Well under what it would cost here....by maybe as much as 50%.

It might be wise to remember that the phrase "you get what you pay for" has a very firm base in reality.

@gardengal48 (PNW Z8/9) Thanks. I'm not worried at all. This company has done excellent work.

Very nice. Do you mind sharing cost of the corten vs using other materials?

@kj s I wish I could but they did so much other work for me that I don’t know where exactly the price of the steel portion fell. I would say the steel planter was much cheaper. the wall required rebar, bulldozer, cement truck, etc.

That looks wonderful. Congratualtions!

Thank you @Cyncyn cyn

I also had them build this wall for my dog play area: The block pattern matches the house.

wow, all very nice!