I think we could do the Chainsaw and Jackhammer in the store on the cheap pretty easy. The Chainsaw would have to come with some fuel though, otherwise you are effectively buying a paperweight. Sadly a tank of fuel in a Chainsaw doesn't last long. I have yet to see how long a fully charged Jackhammer lasts to have any idea how much value that would have before you are able to recharge it.
The store currently sells drop only weapons and in some servers like Scourge the friendly outposts aren't really all that friendly yet. So I could see the merits of being able to buy the Chainsaw and Jackhammer.
The starter material package defeats the purpose of playing in PvE to me as without the PvP it is just a survival game. Assuming I find a space I want my base right away, I can have a starter base up in less than an hour without help. I usually take more time looking for the right spot on wipe day than actually getting my starter base up.
Being able to pay to keep BP's over a wipe isn't really possible. When Facepunch forces wipes, sometimes they force the BP wipe. This might not be true now, but it was true the last time I played regularly and was an Admin. Even if FP doesn't force BP wipes anymore it would be a logistical nightmare to go in and pick and choose out of all the different player profiles who gets a paid pass on the BP wipe. And that's assuming that is even remotely possible. Every wipe even Admins have to relearn their BP's currently.