@Meybi
Gods don't actually exist down on the planet, but Feru is pretty much as close to the top tier of beings as can be. And theoretically, he could still be sniped almost anytime if Feru doesn't have that barrier up (which is totally invisible, so he literally has no way of knowing when it's up).
@Talismaster
Considering that the country who summoned him is pretty much thinking of the 3 heroes they 'acknowledged as heroes' as 'brainwashable cannonfodder', who would stay there?
And well, considering his powers are so far 1) dimensional space 2) shopping from a japanese site via the internet and 3) cooking skills , from the start, he's only really had three choices to go for the future 1) Merchant / Transporter / Porter , 2) Chef / Restaurantowner 3) Adventurer (as he is now).
Basically 'The Game was rigged from the start'.
And well, while him having slaves instead might've been nicer to another part of the audience, quite frankly, he would've had to luck out on finding one very strong slave for sale just as he's summoned, at a price noone is willing to pay, but he's able to pay (likely due to having sold something otherwordly), but a) no mention of whether slavery is a thing or not in that world and b) even if it is, what're the odds of powerful (most likely female) battle slaves being sold in the capitol just as he's summoned ? True it happens in other novels, but not necessarily in the first few days, or if it does the slaves in question tend to be rather wounded so they might not live long, and in this case, he has no way of healing them.