We do allow memberships to be transferred to alts accounts or other players. Keep in mind that once it is transferred it no longer is yours (unless you own the other account as well.) Send us a help ticket to request a transfer.
Store purchases are a one-time thing and lasts until they're gone if that's by death or other natural causes, including wipes. Memberships are permanent and do lasts forever. Purchases made a week prior to a wipe will carry over upon request. You will see a warning on the store page during the last week of wipe. Or see Store Purchases Wipe Day