I've been using viabox services for several years and despite a few issues (clunky outdated website and forms, lot of field to fill when contacting support, repacking not free for more than 10 items, overcharged shipping) they actually do the job.
Once you get to know your way around their system it's not that difficult to use their service.
But in the last couple years, a series of price increase sent their prices through the roof, paypal disappeared, and their payment processor has issues with foreign cards. They offer bitcoin payments but promote a shady third party with additional fees.
Their prices are now so high that you will probably save money by buying each items directly and skipping viabox. Really too expensive to be worth using, I paid 4 times more for a smaller package than 3 years ago.