Exterior door for side of garage

Hi All,
I plan on adding an exterior door just for access so it will be a 30" ish size, not the large up and over garage door. I almost brought one in B&Q which was a 2XG but on reading a review and reviews on wickes website for similar wooden doors it seems they might be sponges instaed of doors.

Can you reccomend a good wooden door for this purpose, preferably with a window in. The B & Q one and wickes was about £80. I have looked on ebay for cheap 2nd hand doors but also local pickup miles from me. I dont want anything fancy just wooden with a window and not sponge like. I guess the softwood doors are to be avoided? over hardwood.

Thanks for any advice

Try local freecycle?

Thank you I have not used that before. I only need something basic and new back doors quite often seem more than I need as there designed more for the back of a house rather than the garage.

Thanks