Other than being slow to respond, I had great help from Thomas. But I am not trying to sell you. I can maintain it myself.
I have worked on Ditch Witch equipment, not that bad to work on, but parts are pricey. Shop rates will be around $65hr. But that will hold true for any machine so that doesn't matter. I am glad to hear it will take the standard attachments. From the look of the website you needed to change the front of the machine for other attachments. That is were I was basing pricing.
You seem pretty sold on this Frans, an Dave seems to think well of them, so I cannot discourage you. Most of their equipment is built very well, they have a nation wide dealer network which is a huge help!
I cannot stress enough how nice my Thomas has been to my back! I hope to get some removal jobs soon to use it for that.
If it fits your perceived needs you like the price, have other ideas of how it can make you money, and can justify it, buy it!