Avoid being vague If you have references include them. Dont say available upon request. If you have gaps in employment explain them clearly. They will probably come up in the interview anyways. Being prepared in advance by giving complete information in your resume is better than being caught off guard in the interview or worse skipped over all together.
The resume for an entry level candidate is often low cost compared to the resume for a professional or an executive. The creation of a good summary takes time; therefore the service you choose may take up to 2-3 days to provide you with the document. Make sure you check whether there are extra charges for any revisions you require. Competent services do not charge anything extra for corrections or alterations.
No contact address is available. If the service does not have a physical location they may not be a suitable option for you. The chances are they are more into mass production of average documents. Numerous resume mills employ non-skilled individuals overseas to create these documents. They get hold of your current resume embellish it with the information available from the questionnaire and place it in a standard format.