Very Strange.

The orange box stores here only stock PVC conduit and fittings up to 2", and prices are going up about the same as the real supply houses.

The blue boxes usually have 3" PVC available, but I haven't been in one lately to check prices.

How many "harry homeowner" type projects call for 3" PVC pipe, anyway? Are that many DIYers installing 400A services on their homes?