Hello,
All edition of HikaShop have multi-categories for products.
And all edition of HikaShop have characteristics/variants.
Regarding the support of Joomla access levels ; it requires HikaShop Business. These ACL can be set-up on products themselves and on prices.
Regards,
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.