I want to spruce up my concrete garage floor and have looked at numerous interlocking tiles like RaceDeck but are very pricy. I need to do about 800 sq.ft. and the RaceDecks are around $3.75/sq.ft. This would be a very expensive garage floor. Would the vinyl self-adhering tiles work? They are only about $.75/sq.ft. I am concerned if they would hold up over time and would they stain easily. Thanks