Yes they were decent rifles. And the upper end versions were even nicer with high grade stocks, and nicer finish. Prices vary greatly depending on which version they are.

I had very good luck with the first I owned. It was built for me for an article I wrote for "The Accurate Rifle" in 2000. It was a heavy, round barrel with a blued receiver and fancy wood without the case.  One problem I had was the firing pit was too short and often would more to the rear far enough that the hammer would hit it. I solved that with a small leaf spring I inserted in the block. The other was the poor fit of the buttstock, I could feel it shift sometimes when I mounted it to my shoulder, fixed that with acra-glas. I believe the serial number was 0050. Unfortunately I let it get away from me...

The second one I had was one of the production versions in a case with all the options, terrible workmanship overall.  The front sight was canted to one side and the rear sight in the opposite direction. On top of that, the barrel flats had a drop-off/spiral at the end where they merged with the round portion of the barrel. Amazingly it took a lot of explaining for them to understand the importance of the sights being square to each other. I got the rifle NIB and was able to convince the Remington Custom shop to take it in for repair. They agreed to put in a full round barrel but when I got it back the sights were again canted. So it went back for another rework.

Eventually the Custom shop informed me that they were unable to fix it and would buy the rifle back from me for the money I paid for it. Getting the refund was a long process that only happened after I wrote letters to the editors of a number of gun magazines that Remington advertised in. Within 5 days of me sending those letters Remington called to confirm my address for the check...

As to the "Standard Grade" rollers, I saw an advertisement for one on GB that had the blade sight was inserted backwards, like a pistol ramp sight. The owner claimed t was delivered like that. Since I was then in frequent contact with the Custom Shop I casually mentioned the ad and asked about it. Few days later the foreman told me he spoke to the young man building those rifles and he assured the foreman it was correct. A few weeks later during a conversation about my rifle the foreman told me that over the previous weekend he was looking a a book with a lot of old rifles in it and the front sights were all mounted in the opposite direction, I was dumbfounded!