Question about Japanese Auction Sites

You can get your deposit back.  Just go to the account tab and there is an option for refund.  You don't get your fees part back, but you can get money you have deposited back.
Jauce has a 60 day holding of won auctions for you to organise shipment.  This starts from when your item arrives at there warehouse, so very auction has a 60 day limit before fees will be charged.  At the moment it has been extended till the 30th September due to Covid-19.  Cost are free for this extra storage.
At the moment they can't send out anyway as most countries have closed there borders to post/couriers.  New Zealand being one of them.
Jauce and other version of this auction site are useful for only the very rare items you can not get in your country.  Sometimes what you bought is the cheap part.  Make sure you look to purchase over say a 30 day period and once they have all arrived in organise to ship them back. 
Be careful with the shipping costs in Japan.  Some people load up the shipping to cover the cost of the item.  Make sure you have a good look at whats on the site before dipping your finger in.
I hope this helps.