Your fridge and stove, while new, still has shipping material on them.

Shortages of construction labor and material will also have a major impact upon pricing. 

You must also materially participate in your RE activities.If you materially participate in each RE activity, losses are fully deductible.

What materials are used besides the LVP itself?

Quote from @Davin Manfredi: This is a construction material on the remodel or work done on the home, so I would say it would fall on you.

Ask them to explain.2) They should provide you with the materials receipt, which you'll need for the warranty!

To qualify for material participation, you generally need to meet either the 500-hour or 100-hour rule.

. $2-4 per sf.Rigid Core Vinyl: This material is available in SPC (stone polymer composite) and WPC (wood polymer composite) types.

A builder’s risk policy is also worth exploring, as it can protect the property, materials, and equipment during your restoration work. 

Quote from @Conrad Tillman: Quote from @Jay Hinrichs: LOL  its kind of like 50 ways to leave your lover.And its very much dependent on your jurisdiction. however I will list the stuff I have gone through the last decade or so through about 200 new builds in 4 markets.1. material price fluctuations. rarely down almost always up pretty much annually. 2. as we all know labor  scarce  and or unqualified and do poor work..