They should go into their inventory, just like any other OFB purchase. Inventory is not actually accessible while your playable is on a non-owned community lot buying a novel, though, and it won't appear in their inventory at home if they didn't actually pay for it. Just like with every other OFB purchase.
You have to actually click on the cash register to get them to pay, just like with other OFB purchases. It's not like clothes, where they just go to the cash register by themselves.
Sorry for late reply, I had PC problems and now I still don't have access to the game. Thanx, but I still don't understand, what do you mean that you need to click on the register? You mean your sim needs to click, even though she's selling the novels? It sounds like you're talking of going to a set up community lot with your sim to buy novels of another sim instead, is that how it's supposed to work and not the other way around?You have to actually click on the cash register to get them to pay, just like with other OFB purchases. It's not like clothes, where they just go to the cash register by themselves.
What I tried to do was to set up a business of novel-selling, but all customers ignored the register although they took the novels and they had to be restocked. So in effect they never bought them and never had them in their inventory. When I closed the business, they just headed home.