Some trees hit my deck after a hurricane last fall. When we rebuilt it in December composite was about $500 more than lumber. The price since December has almost doubled for composite from $3.80 a linear foot to almost $8.
If you can wait until next summer you will probably save a lot depending on the deck size. Compare wood with composite decking and you might get a favorable composite price.
But today, $9 for a 2x4 is ridiculous. I’m sort of expecting labor costs to go up too since these guys are in such demand.