It's pricey as they need to resize 3 rings which is why I rather pay a bit more to get a new one. If your fingers are long, you can try wearing a diamond band to prevent the trinity from rolling off your finger. I found that diamond band looks best stacked with trinity. I can't do that though as my finger is too short and I have the M size (thicker width).
I do that sometimes. I put my solitaire over my trinity but sometimes i feel more comfortable when its alone.i feel like it is too bulky.