I have plenty of refractors with the line. Maybe it won't be worth as much as a non-line version, but since it's for a collection that I wish to keep, I don't care
If I had 2 copies of the same refractor card, 1 with a line, 1 without, and I was selling them on ebay, I would start them at the same price. I would not ask a premium on the non-line one (or a discount on the lined).
-- Dan --
Note: Please see my profile for more info regarding trading (section updated 3/4/2024). I have added a large portion of my inventory to the site, and currently have trading turned on (details are in my profile).