That $5 is good for up to 12 sheets - or used to be. I tended to order for than one vessel's plan while I was at it.
OfficeMax can scan and get you a PDF for <$10 if you provide a USB stick for it. The PDF is more than twice the size of the paper plan if directly printed back out..
They can also save as PNG and JPEG but the file's size is huge.
Painter does not know from PDF. The file size may be too large for it if it did. I have to get it to a format that Painter likes.
JPEG is lossy -- PNG is loss-less -- PNG has an alpha channel. A 1:48 of a liner is too large as the complete plan.
Adobe PS has a free trial period - it can import a PDF, crop it into smaller sections and export as PNG.
If you do this, make sure that HIC has a scale on the plan. Otherwise, add your own.
On another site - there was a question about what to do with a downloaded free plan from the site.
My glib answer would be: if you have to ask, you are not ready to do anything with such a plan.
My second answer would be: what part for a model is so large as to need a printed copy of the whole plan?
In a drawing program, isolate the part of interest and just print it out. Unless your scale is insanely large - a 8.5x11 sheet of paper should hold any component's plan.