You can search some cost-effective tool than I suggest KDETools MBOX to PST converter
• This software support application for both technical
• The user can take a free preview of the content before the conversion process.
• It extracts all the essential email components like To, Bcc, Cc, Sent, From, Received, Attachments,
• Selective conversion
of MBOX to PST is possible to convert items/folders
from MBOX to PST.