Is it worth getting a vehicle valeted prior to sale? If you look after your car or van and keep it really tidy then maybe not but if a person puts a untidy vehicle up for sale a picture can say a thousand words! It gives the impression that maybe the vehicle isn't looked after and that can put potential buyers off. Getting a untidy car or van valeted prior to sale will always add value even at the very least if it's the cost of the valet on top of the sale price and will also generally reach a wider audience as a tidy vehicle always looks more pleasing to the eye than an untidy one.
To keep alloy wheels in good condition, It's a good idea to wash them down now and again to stop heavy build up of brake dust that can damage paint if left too long to bake on with the heat generated from the vehicles braking system.
If you notice bird droppings on your paint work, It's a good idea to remove asap to prevent damage to the top clear coat / paint, This can be done by wetting the area to soften the droppings and then gently remove by grabbing (do not scrub) using soft tissue.
If your going to carry paint or milk as an example buy a strong container (with lid) that can be placed in the boot to place items in, If you do happen to brake hard this will help to try and contain any spillages.
If you do happen to spill something within your vehicles interior it's best to try and get it removed as soon as you can as spillages left on seats or even carpets are harder to remove and will impact the end result.
If you use your van or car to do your job where there may be a transfer from your clothing to your fabic seats, why not use seat covers, they will help to protect the fabric as heavily soiled seats can sometimes be near impossible to bring back to like new more so with alcantara or suede.
Floor mats are a good way to protect your vehicles carpet, more so with the drivers area as this will have the most wear & tear, it is a good idea to buy quality fabric type mats or rubber ones as cheap floor mats only really look good once and when they are heavily contaminated due to materials used to produce them will never look as good as new again.
If you need to carry items such as hay or straw as an example why not place a plastic cover down to protect the vehicles carpet. hay or straw will embed itself into the fibres and can take absolute age to remove.
It's not really possible to contain pet hairs to an area (boot), as when you open the tailgate as an example with a light breeze pet hair will blow towards the front and start to build up on carpets and seats, It's better to give your vehicle a light vacuum now and again otherwise it can take an age to remove them.