How often do you update/add new listings?

Larger, less frequent updates versus smaller, more frequent updates: I'm really interested to hear what works for you, and what your thoughts are. 

 

I've been doing large updates (50+ new items) every month or so. This is easiest for me in terms of time (my day job is 3 weeks on, 1 week off, so I tend to update in my week off) but I'm wondering if it might be better to do smaller, more frequent updates.

 

Does anyone have a preference? Has anyone had more success with one strategy moreso than the other? How long do you think is too long between updates (if you're a buyer and/or seller, I'd like your opinion)?

 

Ideally, I'd like to list new items as soon as they arrive from the wholesaler, but that isn't always possible because of my day job.

 

My items are collectible and consumable, so people tend to buy multiple items at once for those reasons. This is why I've gone with larger, less frequent updates, so that they can buy many items at once.