Here is the full list of S120 tags that will work in an eCommerce Store Autoresponder:

[[S120:dc:additionalGift]]
[[S120:dc:cVSHeader]]
[[S120:dc:campaignName]]
[[S120:dc:campaignType]]
[[S120:dc:city]]
[[S120:dc:class]]
[[S120:dc:contactInfo]]
[[S120:dc:country]]
[[S120:dc:donationInfo]]
[[S120:dc:donationLevelName]]
[[S120:dc:donationLevelValue]]
[[S120:dc:donorSpecifiedAmount]]
[[S120:dc:email]]
[[S120:dc:firstName]]
[[S120:dc:forEmail]]
[[S120:dc:giftAmount]]
[[S120:dc:goodsAndServicesValue]]
[[S120:dc:honoreeFullName]]
[[S120:dc:honoreeName]]
[[S120:dc:honoreeTitle]]
[[S120:dc:includeGiftAmountInNotification]]
[[S120:dc:jointDonation]]
[[S120:dc:jointDonorName]]
[[S120:dc:lastName]]
[[S120:dc:lastPledgePaymentDate]]
[[S120:dc:membershipRenewal]]
[[S120:dc:memorialDonation]]
[[S120:dc:name]]
[[S120:dc:newMembership]]
[[S120:dc:nextPledgePaymentAmount]]
[[S120:dc:nextPledgePaymentDate]]
[[S120:dc:nextPledgePaymentUrlServletPart]]
[[S120:dc:numberOfItems]]
[[S120:dc:originalTransAmount]]
[[S120:dc:otherAmount]]
[[S120:dc:paymentMode]]
[[S120:dc:pledgeAmount]]
[[S120:dc:pledgeAmountPaid]]
[[S120:dc:postalCode]]
[[S120:dc:premiumName]]
[[S120:dc:premiumSelected]]
[[S120:dc:premiumShippingCharge]]
[[S120:dc:premiumValue]]
[[S120:dc:productName]]
[[S120:dc:productSelected]]
[[S120:dc:purchaseAmount]]
[[S120:dc:refundAmount]]
[[S120:dc:rewardPointsEarned]]
[[S120:dc:salutation]]
[[S120:dc:shippingCharge]]
[[S120:dc:sponsoreeName]]
[[S120:dc:stateProvince]]
[[S120:dc:stdDonationThankYouMessage]]
[[S120:dc:stdPledgeCompleteMessage]]
[[S120:dc:stdPledgePaymentMessage]]
[[S120:dc:stdPledgeThankYouMessage]]
[[S120:dc:street1]]
[[S120:dc:street2]]
[[S120:dc:suffix]]
[[S120:dc:taxDeductibleValue]]
[[S120:dc:taxID]]
[[S120:dc:teamRaiser]]
[[S120:dc:title]]
[[S120:dc:trackingCode]]
[[S120:dc:transactionDate]]
[[S120:dc:transactionID]]
[[S120:dc:tribute]]
[[S120:dc:tributeDonation]]
[[S120:rc:autoresponderType]]
[[S120:rc:cVSHeader]]
[[S120:rc:class]]
[[S120:rc:hashCode]]
[[S120:rc:renderMode]]

Specifically, the [[S120:dc:premiumName]] tag will display the names of the products purchased and the [[S120:dc:purchaseAmount]] will display the total amount of the purchase.