This sample form is for reference and educational purposes only. The use of these forms does not constitute legal representation or legal.This is an electronic version of Form 500TX in a fill-able pdf format. The program application does all of the calculations for you. Edit, sign, and share mobile home purchase agreement online. No need to install software, just go to DocHub, and sign up instantly and for free. 500TX Texas Manufactured Housing Purchase Agreement. Utilize our template to generate a mobile home bill of sale, ensuring a comprehensive record of your transaction and reducing the risk of legal complications. An easy-to-use template for a purchase and sale agreement from a mobile home. All you need to do is fill out the relevant fields with your details.