Its an interesting design. At first I thought the prices were reasonable, but since you said it did not come with something, and I am not familiar with the Bridgecity brand, I was not sure what was what. If I am reading this right, the price listed is just for the cutting attachment?
I would think in your line of work, you might like the Lie Nielsen Router Plane #71 I believe. I was just at a fair yesterday and picked one up. I built a few at my 90 day plane building apprentice coarse with Lie Nielsen so I know their construction literally inside and out. It may be what you need to make your inlay work easier?
Interestingly enough, a new member on here, Paul Hubbman and I chatted privatively about making a router plane from scratch. I like to make my own tools and the router planes, made both then and now, have some limitations. Paul and I discussed some neat features we would add to any router plane I make. Unfortunately it will be some time before I make one. (Too many other projects right now).
I gotta ask though, if I do make a router plane I would appreciate any design advice you could give me. I don't do a lot of inlay work so your help would be nice. One of my goals in making new tools is not only to make something unique and pretty, but VERY functional.
I have no intention of traveling from birth to the grave in a manicured and well preserved body; but rather I will skid in sideways, totally beat up, completely worn out, utterly exhausted and jump off my tractor and loudly yell, "Wow, this is what it took to feed a nation!"