Thomas, putting a value on your pan and grill is very speculative. The pictures lack close up detail, and you don’t include pertinent information like if the pan has any pitting or warping, and also if the grill sits flat. The 4-legged grills do not always sit on all-fours, and that’s probably why they switched to a 3-legged version. Yours has a draft door, so it is not the oldest of the 4-legged grills.
The good part is that your pan is an original with the rectangular handles. It should have “sportsman” under one of the handles. Cleaned up and seasoned in good condition, this pan fetches 60+ on ebay by itself. And Perry, I don’t believe this first fish pan had a lid. The lid came after they switched to rounded handles.
The grill itself could easily bring the same, but only after a good cleaning and seasoning can one tell.
Here’s a photo of my 4-legged grill. Note the lack of a draft door, and raised lettering where the draft door would normally slide.