I went on line to find pricing for the 505 - found a 17 oz. can at www.sewforless.com on sale for $13.49 - it comes in a red can but was told it was the same item, just a larger can and it is made in France instead of England - doesn't gum up the sewing needle - oderless & colorless - won't spot fabric, cleans up with soap & water - acid free - environmentally friendly & contains no fluorocarbons(?). I read all of the reviews (36), and it was given 4.5 stars out of 5. So, I bit the bullet and ordered 2 cans, so I now can only hope that it really is the same as the smaller cans of 505 that can be purchased locally! If not, I've learned another lesson! I'll let you all know how I do with using it! Thanks so much to everybody for all your suggestions, hints & tips - I really am hoping this stuff saves my knees & back!