Posh Sidekick: pricing, features & alternatives (2026)

Automation toolsPoshmark, Mercari, Whatnot, eBayGlobal, USD pricing, US marketplacesFrom USD 9.99/month

Reviewed by the Resale IQ data team · Last verified 8 Oct 2026 · Next check 7 Nov 2026 · How we check

Posh Sidekick is a seller toolkit with a cross-posting product from USD 9.99 per month and an automation product from USD 29.99 per month for Poshmark, Mercari, Whatnot and eBay, with a 7-day free trial and no card (checked 8 Oct 2026).

Visit Posh Sidekick →

Pricing (checked 8 Oct 2026)

PlanPriceBillingWhat it includes
Cross Posting: BasicUSD 9.99per monthCross-post 100 items to 7 marketplaces, bulk editing, relisting 20 a day
Cross Posting: SilverUSD 19.99per monthCross-post 250 items
Cross Posting: GoldUSD 29.99per monthCross-post 500 items
Cross Posting: EnterpriseUSD 44.99per monthCross-post 1,000 items
Automation: BasicUSD 29.99per month50 crosslists, 1 closet, the automation tools
Automation: SilverUSD 49.99per month150 crosslists, 1 closet; higher automation tiers exist and were not captured

7-day free trial on every plan, no credit card required, cancel anytime. Checked 8 Oct 2026 on the vendor's own page. The page has two tabs, Cross Posting and Automation. Only the first two Automation tiers were read in full, so higher ones are not listed here.

Platforms and features

Tools named on the site:

The cross-posting product and the automation product are priced separately, so a seller who needs both pays both. The automation features differ by marketplace, and the vendor describes them as running 24/7 for Poshmark sharing. Check which actions each marketplace allows before turning them on.

Who it is for, and who it is not for

Good fit: A Poshmark, Mercari or Whatnot seller who wants recurring sharing, offers and relisting handled, and who may add cross-posting on a lower-cost plan.

Poor fit: A European Vinted or Vestiaire Collective seller, and anyone who does not want automation running on a marketplace account.

Pros and cons

Pros

  • 7-day trial without a card
  • Cross-posting entry price of USD 9.99
  • Several marketplaces covered by one vendor
  • Cancel anytime, no contract

Cons

  • Cross-posting and automation are priced separately
  • Higher automation tiers were not captured
  • US marketplaces dominate
  • Account-rule risk on any automation

These come from the vendor's own pages and documentation, not from user reviews. No star rating or score is shown for this listing.

Platform-rule note: This tool acts inside your logged-in marketplace account. The marketplace's terms decide which automated actions are allowed, and enforcement is the platform's call. Read the current terms before using it; this directory lists the tool but does not endorse using automation. Resale IQ has not tested it.

How it pairs with Resale IQ

Posh Sidekick manages listings you hold. Resale IQ is for the earlier decision of whether to buy a named model, with BUY, WATCH or SKIP and a maximum price from Vinted EU.

Check an item before you buy it

Resale IQ gives BUY, WATCH or SKIP and a maximum price for a named model, from Vinted EU asking prices and observed departures.

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Alternatives

More in Automation tools: 3Dsellers, Bump, Dotb.

Frequently asked questions

How much does Posh Sidekick cost?

On 8 Oct 2026 cross-posting ran from USD 9.99 to USD 44.99 per month and the automation product started at USD 29.99 per month.

Is there a free trial?

Yes, every plan has a 7-day free trial with no credit card required.

Which marketplaces does it automate?

The site names Poshmark, Mercari, Whatnot and eBay for automation and says cross-posting reaches 7 marketplaces.

Sources and method

Every price is copied from the page linked above on the date shown and is not converted between currencies. If a figure is not published we write "Not published". Method and corrections.

Is something wrong or out of date? Send a correction or claim this listing. Factual corrections with a vendor URL are applied within 5 business days.