It doesn't take trading into account, but this page shows what's worth. Accumulators and Aluminium tanks are the way to go. I don't know how worth Toxic Bombs are because it seems it wasn't updated. Otherwise I'd recommend you to upgrade your trading portal and sell Obsidian knives / Maya calandar, both can make you earn quite some money.
https://www.notion.so/Deep-Town-Items-Calculator-d8110643cca44d179b3f37f6ce7e23d2
Yeah... same for me. To get around it I temporarily switch to gesture navigation which hides the navigation bar. To do this quickly I use a gesture in "one hand operation +" https://play.google.com/store/apps/details?id=com.samsung.android.sidegesturepad
It is not available on the Playstore. However, the version with ads I found is available on the Amazon Store : https://www.amazon.com/Derp-Developer-Black-Screen-Life/dp/B01BCI1OOE
Join Deep Town crafters ranks, and we both get a free chest! zcb5x.app.goo.gl/?link=https://play.google.com/store/apps/details?id=com.rockbite.deeptown&apn=com.rockbite.deeptown&al=invitationID:-KzMjZJCnXbSKtDonlMY