Terapeak Group Buy
Terapeak indispensable tool when making dropship, famous tools such as DSM, Yaballe, AutoDS, Shopmaster…etc..
Cost: $10 for 100-150 listings. Terapeak group buy of course, you can choose to manually list but won’t track price as well as the tool.
Uses: Saves you more time than manually listing and managing products better (uploading images, filling in product parameters), Repricer function – Track prices on the source side (amazon, aliexpress, and suppliers that the tools support), auto message – automatically send emails including tracking and asking for feedback.
*Tip: Dsm gives free 50 listings for price management and tracking, more advanced functions such as an auto-message or image editing require a fee. Currently, DSM is the cheapest in the tool list (cheap in the price range).

Product finder
There are Terapeak many product finder tools for dropshipping tactics. The most common tactic is to snipe (spy) competitor products, another common tactic is to find best sellers. Or more simply, follow trends. Of course, there are free tools for finding products, but usually, anything, paid has the value of paid, free just uses simple functions.
Terapeak tools: JungleScout (Free), SellerScout (paid), Terapeak (paid), Zikanalytic (paid)…with a cost of 20-30$ for 1 product search.

Fee for setting up multiple accounts
Some of you will wonder “why does it cost to set up multiple accounts?”..ok, this is free, but you have to pay a fee for how one account is suspense or limited but other accounts are not affected. Terapeak enjoy and eBay process together (mass die). The cost for having multiple accounts is the simplest 1 VPS, the price ranges from 150-200k/month, or buy 1 USB 3g with 1 3g sim to use (Holy sim in mobile 20k/month, 2GB per day). In addition, it is definitely better than buying a cheap laptop of about 1-2 million to use exclusively for 1 account.

Store fee
After selling for 1-2 months, you need to list more products because 50 free eBay listings per month is not enough for your needs, and you sub 1 store with the cheapest price of 7$ for 100 listings, or basic store for $ 27… This cost depends on your sales plan.
Summarizing 1+2+3+4, the lowest cost for doing eBay 1 month will be about 50-60$ a month for you to sell eBay. Terapeak and when you scale this model to many accounts, you will have to invest more for these accounts, at least the cost of the tool list will be.
Purchase fee
The first time you do dropship, you will be jailed for 21 days by PayPal, after 21 days, the money can be used or withdrawn to your bank account. However, Terapeak if you upload tracking early, it will take about 7-10 days for the money to be available. You need to prepare money in your card about 1-2 million to buy goods at amazon or aliexpress.
I have just listed the basic types of costs that may arise when you start to do eBay dropshipping. In addition, there may be some other costs incurred depending on the needs of each person. Please consider the finances that are appropriate for the initial development :D.